/* ChordySong — promo site */
:root{
  --brand:#2D6CDF;
  --brand-2:#5b8def;
  --bg:#0E1116;
  --bg-soft:#141a22;
  --bg-card:#171f2a;
  --line:#243042;
  --text:#eaf0f7;
  --muted:#9fb0c3;
  --radius:16px;
  --maxw:1080px;
  --font:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);font-family:var(--font);
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- Header ---- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(14,17,22,.82);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem}
.brand img{height:34px;width:34px;border-radius:8px}
.brand span b{color:var(--brand-2)}
.nav-links{display:flex;gap:8px;margin-left:auto;flex-wrap:wrap}
.nav-links a{padding:8px 14px;border-radius:10px;color:var(--muted);font-weight:500;font-size:.95rem;transition:.15s}
.nav-links a:hover{color:var(--text);background:var(--bg-soft)}
.nav-links a.active{color:var(--text);background:var(--bg-soft)}
.nav-cta{background:var(--brand)!important;color:#fff!important}
.nav-cta:hover{background:var(--brand-2)!important}
.menu-toggle{display:none}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:12px;
  font-weight:600;font-size:1rem;cursor:pointer;border:1px solid transparent;transition:.15s}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-2);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand-2);color:var(--brand-2)}

/* ---- Hero ---- */
.hero{position:relative;padding:88px 0 72px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(800px 400px at 70% -10%,rgba(45,108,223,.35),transparent 60%),
             radial-gradient(600px 300px at 10% 20%,rgba(91,141,239,.18),transparent 60%);
  pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative}
.eyebrow{display:inline-block;font-size:.82rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;
  color:var(--brand-2);background:rgba(45,108,223,.12);border:1px solid rgba(45,108,223,.3);
  padding:6px 12px;border-radius:999px;margin-bottom:20px}
.hero h1{font-size:3.1rem;line-height:1.08;margin:0 0 18px;font-weight:800;letter-spacing:-.02em}
.hero h1 .accent{background:linear-gradient(90deg,var(--brand-2),#8fb4ff);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:1.2rem;color:var(--muted);margin:0 0 30px;max-width:46ch}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}

/* phone mockup */
.mockup{justify-self:center;width:280px;aspect-ratio:9/19;background:#000;border-radius:34px;
  border:2px solid var(--line);box-shadow:0 30px 80px rgba(0,0,0,.55);padding:12px;position:relative}
.mockup-screen{width:100%;height:100%;border-radius:24px;background:linear-gradient(180deg,#0c1118,#11202f);
  overflow:hidden;display:flex;flex-direction:column}
.mk-head{display:flex;align-items:center;gap:8px;padding:13px 14px 3px;font-size:.78rem;font-weight:700}
.mk-back{color:var(--brand-2);font-size:1.05rem;line-height:1}
.mk-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text)}
.mk-meta{padding:0 14px 9px;font-size:.7rem;color:var(--muted);letter-spacing:.02em}
.mk-meta b{color:var(--brand-2)}
.mk-fret{position:relative;height:62px;margin:0 12px 11px;border:1px solid var(--line);border-radius:8px;overflow:hidden;
  background:
    repeating-linear-gradient(to right,transparent,transparent calc(16.6% - 1px),rgba(255,255,255,.07) 16.6%),
    repeating-linear-gradient(to bottom,transparent,transparent calc(16% - 1px),rgba(255,255,255,.06) 16%)}
.mk-fret .dot{position:absolute;width:13px;height:13px;border-radius:50%;font-size:6.5px;font-weight:700;
  color:#fff;display:flex;align-items:center;justify-content:center;transform:translate(-50%,-50%)}
.dot.red{background:#e0413f}.dot.green{background:#3fae6b}.dot.blue{background:#2d8fe0}.dot.yellow{background:#e0b53f;color:#15171c}
.mk-bars{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;padding:0 12px;margin-bottom:12px}
.mk-bar{background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:7px;padding:5px 0 5px;text-align:center}
.mk-bar b{font-size:1rem;font-weight:800}
.mk-bar .sec{display:block;font-size:6px;letter-spacing:.08em;color:var(--muted);margin-bottom:2px}
.mk-bar.active{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand) inset}
.mk-bar.active .sec{color:var(--brand-2)}
.mk-kar{text-align:center;padding:4px 12px 2px}
.mk-kar .now{font-size:1.18rem;font-weight:800;color:var(--text);line-height:1.15}
.mk-kar .now .hl{color:var(--brand-2)}
.mk-kar .next{font-size:.82rem;color:var(--muted);font-weight:700;margin-top:2px}
.mk-strum{display:flex;justify-content:center;gap:5px;margin-top:auto;padding:12px;
  border-top:1px solid var(--line);font-size:.95rem;color:#54627a}
.mk-strum .on{color:var(--brand-2);text-shadow:0 0 8px var(--brand)}

/* ---- Sections ---- */
section.block{padding:72px 0;border-top:1px solid var(--line)}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head h2{font-size:2.1rem;margin:0 0 12px;font-weight:800;letter-spacing:-.01em}
.section-head p{color:var(--muted);font-size:1.08rem;margin:0}

/* cards grid */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.18s}
.card:hover{border-color:rgba(45,108,223,.5);transform:translateY(-3px)}
.card .ico{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(45,108,223,.14);border:1px solid rgba(45,108,223,.3);margin-bottom:16px;font-size:1.4rem}
.card h3{margin:0 0 8px;font-size:1.18rem}
.card p{margin:0;color:var(--muted);font-size:.98rem}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:step}
.step{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;position:relative}
.step .num{width:38px;height:38px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step h3{margin:0 0 8px;font-size:1.1rem}
.step p{margin:0;color:var(--muted);font-size:.95rem}

/* faq */
.faq-list{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
details.faq{background:var(--bg-card);border:1px solid var(--line);border-radius:12px;padding:4px 22px}
details.faq summary{cursor:pointer;padding:18px 0;font-weight:600;font-size:1.05rem;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--brand-2);font-size:1.5rem;font-weight:400;transition:.2s}
details.faq[open] summary::after{transform:rotate(45deg)}
details.faq p{margin:0 0 18px;color:var(--muted)}

/* cta band */
.cta-band{background:linear-gradient(120deg,rgba(45,108,223,.18),rgba(45,108,223,.04));
  border:1px solid rgba(45,108,223,.3);border-radius:24px;padding:54px 40px;text-align:center;margin:24px 0}
.cta-band h2{font-size:2rem;margin:0 0 12px;font-weight:800}
.cta-band p{color:var(--muted);font-size:1.1rem;margin:0 0 28px}

/* contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.field{margin-bottom:18px}
.field label{display:block;font-size:.9rem;font-weight:600;margin-bottom:7px;color:var(--text)}
.field input,.field textarea,.field select{width:100%;background:var(--bg-soft);border:1px solid var(--line);border-radius:10px;
  padding:12px 14px;color:var(--text);font-family:inherit;font-size:1rem}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--brand)}
.field textarea{min-height:130px;resize:vertical}
.field select{appearance:none;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%239fb0c3' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 14px center}
.field select option{background:var(--bg-soft);color:var(--text)}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.info-row{display:flex;gap:14px;align-items:flex-start;margin-bottom:22px}
.info-row .ico{width:42px;height:42px;border-radius:10px;background:rgba(45,108,223,.14);
  border:1px solid rgba(45,108,223,.3);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.info-row b{display:block}
.info-row span{color:var(--muted);font-size:.95rem}

/* page hero (sub-pages) */
.page-hero{padding:64px 0 40px;text-align:center;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(700px 300px at 50% -20%,rgba(45,108,223,.25),transparent 60%);pointer-events:none}
.page-hero h1{font-size:2.6rem;margin:0 0 14px;font-weight:800;letter-spacing:-.02em;position:relative}
.page-hero p{color:var(--muted);font-size:1.15rem;max-width:600px;margin:0 auto;position:relative}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:44px 0 30px;color:var(--muted)}
.footer-grid{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;margin-bottom:28px}
.footer-grid .brand{color:var(--text)}
.footer-cols{display:flex;gap:60px;flex-wrap:wrap}
.footer-col h4{color:var(--text);font-size:.95rem;margin:0 0 12px}
.footer-col a{display:block;color:var(--muted);font-size:.92rem;padding:4px 0;transition:.15s}
.footer-col a:hover{color:var(--brand-2)}
.footer-bottom{border-top:1px solid var(--line);padding-top:22px;font-size:.88rem;display:flex;
  justify-content:space-between;flex-wrap:wrap;gap:10px}

/* responsive */
@media(max-width:860px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:2.4rem}
  .grid-3,.steps{grid-template-columns:1fr 1fr}
  .contact-wrap{grid-template-columns:1fr}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-soft);
    flex-direction:column;padding:14px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{margin-left:0}
  .menu-toggle{display:inline-flex;margin-left:auto;background:transparent;border:1px solid var(--line);
    color:var(--text);border-radius:10px;padding:9px 12px;cursor:pointer;font-size:1.1rem}
}
@media(max-width:560px){
  .hero h1{font-size:2rem}
  .grid-3,.grid-2,.steps{grid-template-columns:1fr}
  .section-head h2{font-size:1.7rem}
}

/* video promo (9:16) */
.video-grid{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}
.promo-video{width:280px;max-width:80vw;aspect-ratio:9/16;border-radius:18px;
  border:1px solid var(--line);background:#000;box-shadow:0 18px 50px rgba(0,0,0,.45);object-fit:cover}

/* ============================================================
   HERO con device mockup (PC + telefono orizzontale)
   Ricostruzione fedele del player ChordySong
   ============================================================ */
.hero-center{position:relative;text-align:center;padding:80px 0 40px}
.hero-center .eyebrow{margin-bottom:18px}
.hero-center h1{font-size:3.1rem;line-height:1.08;margin:0 auto 18px;font-weight:800;letter-spacing:-.02em;max-width:16ch}
.hero-center p.lead{font-size:1.18rem;color:var(--muted);margin:0 auto 28px;max-width:54ch}
.hero-center .hero-actions{justify-content:center}

.showcase{position:relative;padding:20px 0 70px}
.showcase-grid{display:grid;grid-template-columns:1.55fr 1fr;gap:34px;align-items:end}
.device-cap{display:block;text-align:center;margin-top:14px;color:var(--muted);font-size:.92rem;font-weight:600}
.device-cap b{color:var(--brand-2)}

/* --- Monitor PC --- */
.monitor{width:100%}
.monitor .bezel{background:#12181f;border:1px solid #1e2733;border-radius:14px;padding:12px 12px 14px;
  box-shadow:0 30px 70px rgba(0,0,0,.55)}
.monitor .screen{border-radius:8px;overflow:hidden;background:var(--bg);border:1px solid #000}
.monitor .stand{width:120px;height:34px;margin:0 auto;
  background:linear-gradient(180deg,#1a222c,#10151b);border:1px solid #1e2733;border-top:none;
  border-radius:0 0 12px 12px;position:relative}
.monitor .stand::after{content:"";position:absolute;left:50%;bottom:-9px;transform:translateX(-50%);
  width:200px;height:9px;background:#10151b;border-radius:4px}

/* --- Telefono orizzontale --- */
.phone-land{width:100%}
.phone-land .body{background:#05070a;border:2px solid #1c2531;border-radius:30px;padding:9px 16px;
  box-shadow:0 24px 60px rgba(0,0,0,.5);position:relative}
.phone-land .body::before{content:"";position:absolute;left:7px;top:50%;transform:translateY(-50%);
  width:5px;height:46px;background:#11161d;border-radius:3px}
.phone-land .screen{border-radius:18px;overflow:hidden;background:var(--bg)}
.monitor .screen img,.phone-land .screen img{display:block;width:100%;height:auto}

/* ============================================================
   .ui — interfaccia player ricostruita (scala con font-size)
   ============================================================ */
.ui{width:100%;height:100%;min-height:0;background:var(--bg);color:var(--text);
  display:flex;flex-direction:column;gap:.5em;padding:.85em 1em;font-family:var(--font);overflow:hidden}
.ui *{box-sizing:border-box}
.ui-head{display:flex;justify-content:space-between;align-items:center;gap:.6em}
.ui-head .ttl{display:flex;align-items:center;gap:.4em;font-weight:800;font-size:1em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ui-head .ttl .bk{color:var(--brand-2);font-weight:700}
.ui-head .meta{display:flex;gap:.7em;font-size:.78em;color:var(--muted);white-space:nowrap}
.ui-head .meta b{color:var(--brand-2);margin-left:.2em}

/* fretboard */
.ui-fret{display:flex;gap:.4em;height:6.2em}
.ui-fret .lbls{display:flex;flex-direction:column;justify-content:space-around;padding:.2em 0}
.ui-fret .lbls span{width:1.5em;height:1.5em;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:.62em;font-weight:700;color:#fff;background:#2b3950}
.ui-fret .grid{position:relative;flex:1;border:1px solid var(--line);border-radius:.4em;overflow:hidden;
  background:
    repeating-linear-gradient(to right,transparent 0,transparent calc(6.66% - 1px),rgba(255,255,255,.06) 6.66%),
    repeating-linear-gradient(to bottom,rgba(255,255,255,.06) 0,transparent 1px,transparent 16.6%,rgba(255,255,255,.06) calc(16.6% + 1px))}
.ui-fret .grid .d{position:absolute;width:1.6em;height:1.6em;border-radius:50%;font-size:.6em;font-weight:700;
  color:#fff;display:flex;align-items:center;justify-content:center;transform:translate(-50%,-50%);
  box-shadow:0 1px 2px rgba(0,0,0,.4)}
.d.red{background:#e0413f}.d.green{background:#37a866}.d.blue{background:#2d8fe0}.d.yellow{background:#e0b53f;color:#15171c}

/* chord bars */
.ui-bars{display:grid;grid-template-columns:repeat(4,1fr);gap:.45em}
.ui-bar{border:1px solid var(--line);border-radius:.55em;padding:.45em .5em .4em;position:relative;background:rgba(255,255,255,.02)}
.ui-bar .n{font-size:.6em;color:var(--muted)}
.ui-bar .sec{font-size:.58em;letter-spacing:.08em;color:var(--muted);font-weight:700}
.ui-bar .c{font-size:1.55em;font-weight:800;line-height:1.1}
.ui-bar .beats{display:flex;gap:.25em;margin-top:.35em}
.ui-bar .beats i{flex:1;height:.2em;background:var(--line);border-radius:2px}
.ui-bar.active{border-color:var(--brand);box-shadow:0 0 0 1px var(--brand) inset}
.ui-bar.active .sec{color:var(--brand-2)}
.ui-bar.active .beats i:first-child{background:var(--brand)}

/* chord diagrams (SVG) */
.ui-diagrams{display:grid;gap:.5em;align-items:start}
.chord{height:3.7em;width:auto;display:block;justify-self:start}
.chord .mk{fill:#8493a8;font:700 11px var(--font);text-anchor:middle}
.chord .op{fill:none;stroke:#aab8cc;stroke-width:1.2}
.chord .ft,.chord .ba{fill:#e9eef6}
.chord .pos{fill:#8493a8;font:700 9px var(--font);text-anchor:middle}

/* karaoke */
.ui-kar{text-align:center;margin:.5em 0;padding:.2em 0}
.ui-kar .now{font-size:2.1em;font-weight:800;line-height:1.08}
.ui-kar .now .hl{color:var(--brand-2)}
.ui-kar .next{font-size:1.4em;color:var(--muted);font-weight:700;margin-top:.1em}

/* strumming + footer */
.ui-foot{display:flex;justify-content:space-between;align-items:flex-end;gap:.6em;margin-top:auto}
.ui-strum{display:flex;gap:.35em;font-size:1.5em;color:#54627a;line-height:1}
.ui-strum .on{color:var(--brand-2);text-shadow:0 0 .45em var(--brand)}
.ui-ctrls{display:flex;gap:.4em;align-items:center}
.ui-ctrls i{width:1.9em;height:1.9em;border-radius:50%;background:#1a222c;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:.7em;color:var(--text);font-style:normal}
.ui-ctrls i.play{background:var(--brand);border-color:var(--brand);color:#fff}
.ui-yt{width:5.4em;height:3em;border-radius:.3em;border:1px solid var(--line);position:relative;
  background:linear-gradient(135deg,#3a3a3a,#141414)}
.ui-yt::after{content:"";position:absolute;left:.5em;top:.4em;width:1.5em;height:.35em;background:#e23b2e;border-radius:2px}

/* sizes for each device */
.monitor .ui{font-size:13px}
.phone-land .ui{font-size:9.5px;gap:.4em;padding:.6em .8em}

@media(max-width:980px){
  .showcase-grid{grid-template-columns:1fr;gap:48px;max-width:640px;margin:0 auto}
  .monitor .ui{font-size:12px}
  .phone-land{max-width:520px;margin:0 auto}
}
@media(max-width:560px){
  .hero-center h1{font-size:2rem}
  .monitor .ui{font-size:8px}
  .monitor .bezel{padding:8px 8px 10px}
  .phone-land .ui{font-size:8px}
}